6780534 has 32 divisors (see below), whose sum is σ = 13982976. Its totient is φ = 2191200.

The previous prime is 6780517. The next prime is 6780551. The reversal of 6780534 is 4350876.

It is an interprime number because it is at equal distance from previous prime (6780517) and next prime (6780551).

It is a junction number, because it is equal to n+sod(n) for n = 6780495 and 6780504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40519 + ... + 40685.

It is an arithmetic number, because the mean of its divisors is an integer number (436968).

Almost surely, 2^6780534 is an apocalyptic number.

6780534 is an abundant number, since it is smaller than the sum of its proper divisors (7202442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6780534 is a wasteful number, since it uses less digits than its factorization.

6780534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 6780534 is about 2603.9458519716. The cubic root of 6780534 is about 189.2726950173.

It can be divided in two parts, 67 and 80534, that added together give a triangular number (80601 = T₄₀₁).

The spelling of 6780534 in words is "six million, seven hundred eighty thousand, five hundred thirty-four".